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William Duffy — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · New York, New York

Our Model Tree links this William Duffy across the 1920 and 1930 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 13-person household.

Age 13 b. ~1917 Male Son Born: New York Single

1930 Census Record Details

Census Year1930
LocationNew York, New York
SurnameDuffy
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age13
Marital StatusSingle
BirthplaceNew York
Father's BirthplaceNew York
Mother's BirthplaceNew York
Additional Details
Occupationnone
Can Read/WriteYes
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardManhattan
Est. Birth Year~1917

Household Members

Census records only state relationship to the household head. Pairwise kinship is derived (~90–95% accurate), not recorded. Step/blended families and boarders can break it.

13 people recorded at the same address in the 1930 census.

Name Relation to head Relative to William Age Birth yr
Henrietta Duffy Spouse — 38 ~1892
Joseph Duffy Son — 5 ~1925
Henrietta Duffy Daughter — 20 ~1910
Robert Duffy Son — 1 ~1929
Thomas Duffy Son — 4 ~1926
William Duffy Son — 13 ~1917
Bernard Duffy Son — 21 ~1909
Bernard Duffy Head — 42 ~1888
Marion Duffy Daughter — 17 ~1913
John Duffy Son — 15 ~1915
Dorothy Duffy Daughter — 7 ~1923
Loretta Duffy Daughter — 12 ~1918
James Duffy Son — 19 ~1911

Census Appearances

1920
New York, …
Son, age 2
New York, New York · implied b. ~1918 — 7 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Duffy
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 2
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Occupation none
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1930
New York, …
Son, age 13
New York, New York · implied b. ~1917 — 13 household members
Surname Duffy
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 13
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Occupation none
Can Read/Write Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york

Model Tree

An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Linked across censuses
Our Model Tree links William Duffy across 2 US Census years (1920 and 1930) in New York, New York, using XGBoost record linkage.
Show:
This person
Anchor record
William Duffy
Son · 1930 · age 13 · b. ~1917 · New York
★ You are viewing this record
Sibling
Henrietta Duffy
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Duffy
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Duffy
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Duffy
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Duffy
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Duffy
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Duffy
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Duffy
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Duffy
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Duffy
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1930 US Federal Census — New York, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1548:0185)

Line Name Age Relation Occupation Birthplace
1 Bridget Thompson 40 Head — Ireland
2 Rosemary Thompson 6 Daughter None New York
3 William Thompson 4 Son None New York
4 John Thompson 1 Son None New York
5 James Mckenna 43 Head Plumber New York
6 James Mckenna 17 Son None New York
7 Martin Mckenna 15 Son None New York
8 Edward Mckenna 13 Son None New York
9 Mary Mckenna 11 Daughter None New York
10 John Mckenna 9 Son None New York
11 Thomas Mckenna 7 Son None New York
12 Joseph Mckenna 5 Son None New York
13 John Mckenna 20 Son Clerk New York
14 John Mckenna 20 Son Clerk New York
15 Mary Wynn 50 Head None France
16 Mary Wynn 24 Daughter Bookkeeper New York
17 William Wynn 22 Son Stenog. New York
18 Mildred Wynn 20 Daughter None New York
19 Edward Wynn 18 Son None New York
20 James Wynn 16 Son None New York
21 Catherine Wynn 14 Daughter None New York
22 Stephen Vancura 55 Head Printer New York
23 Mildred Vancura 23 Daughter None New York
24 Florence Vancura 21 Daughter Clerk New York
25 Robert Vancura 19 Son Printer New York
26 Dorothy Vancura 17 Daughter None New York
27 James Miller 46 Head Bookbinder New York
28 Edith Miller 44 Wife None New York
29 James Miller 20 Son None New York
30 Patrick Bell 60 Head Laborer Ireland
31 Jane Bell 50 Wife None Ireland
32 George Bell 40 Son Electrician New York
33 Patrick Bell 38 Son Driver New York
34 Christopher Bell 31 Son Laborer New York
35 William Bell 23 Son Shipping Clerk New York
36 Michael Bell 20 Son College New York
37 Anna Bell 17 Daughter None New York
38 Bernard Duffy 42 Head None New York
39 Henrietta Duffy 38 Wife None New York
40 Bernard Duffy 21 Son None New York
41 Henrietta Duffy 20 Daughter Bookkeeper New York
42 James Duffy 19 Son Chauffeur New York
43 Marion Duffy 17 Daughter None New York
44 John Duffy 15 Son None New York
45 William Duffy THIS PERSON 13 Son None New York
46 Loretta Duffy 12 Daughter None New York
47 Dorothy Duffy 7 Daughter None New York
48 Joseph Duffy 5 Son None New York
49 Thomas Duffy 4 Son None New York
50 Robert Duffy 1 Son None New York

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1930 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.

Source: National Archives and Records Administration (NARA)

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